Steam-pump



(No Model.)

G. P. DEANE.

STEAM PUMP.

No. 248,718. v Patented Oct. 25,1881.

\NVENTOR.

UNrrnp STATES Parana rrrca.

CHARLES P. DEANE, OF SPRINGFIELD, MASSACHUSETTS.

STEAM-PUMP.

SPECIFICATION forming part of Letters Patent No. 248,718, dated October25, 1881.

Application filed July 15, 1881.

To all whom it may concern Be it known that I, CHARLES P. DEANE, acitizen of theUnited States,residingin Springfield, in the county ofHampden and State of Massachusetts, have invented a. new and usefulImprovement in Double-Plunger Steam- Pumps for Mining Purposes, of whichthe following is a specification, reference being had to theaccompanying drawing, forming a part thereof.

The drawing is a longitudinal central and vertical section of the entiremachine with my improvement incorporated.

My invention relates to an improved arrangement of some of the mainparts of the pump proper with respect to other parts and thedriving-engine; and its object is to render the machine as a whole morecompact and convenient than heretofore, by materially reducing itslength, at the same time preserving all the advantages of the previousarrangement.

That my invention therein may be made plain, I will brietly refer to thegeneral arrangement and operation of the machine as a whole.

A,B,andOdeuote,respectively,(inthedrawing,) the cylinder, piston, andpiston-rod of the driving-engine, which is connected with the pumpproper at a. The pump consists substantially of two valves, 1) and c,and two 1101- low plungers, d and 0, with their cylinders or barrels fand g. Of the plungers, d is movable and has double the area ot'e, whichis fixed, being moved upon by its barrel g, attached to and moving withplunger (1. The water raised through pipe h and valve b into barrel f bythe upward movement of plunger (1 is, by its downward movement, forcedupward through the plunger and the valve 0 into barrel g, and half otit, owing to the inferior capacity of this barrel, through plunger 0 andthe delivery-pipe On the succeeding stroke, plunger (1 and barrel 9moving upward, the contents of the latter are displaced by plunger 0 andforced through it and the delivery-pipe, as before.

Now, my improvement consists, chiefly, in materially reducing the lengthof the machine as a whole, by placing the plunger 0 and its barrel g outof or aside from a direct line between the steam-piston B and plunger(1, and substantially as shown in the drawing, whereby (No model.)

a central piston-rod, as 0, instead of being connected with the pump atsome point above the head of plunger 6, can be carried down, as shown,by the side of this plunger and its barrel g, and have a lowerconnection, and still outside, as at a, by which arrangement the machineas a whole is shortened to the extent of not less than the length of onestroke of the enginean important matter in pumps of thisdescription-while at the same time easy access to the working parts, andespecially to the immediate connection of the working parts of theengine with those of the pump, is fully preserved, and the direct,continuous, and easy upward movement of the water is practicallyundisturbed.

Machines similar to this in general character have been constructed inwhich a reduction of length is effected without placing any of" theparts out of line, as described. In these the smaller plunger andbarrel, as e and g, are, with respect to those shown in the drawing,inverted both in position and operation, the former being attached tothe head of the large plunger (1 and moving with it, while its barrel gis fixed, and so placed that its farther or upper end is at a distancefrom the steam-cylinder A only sufficient for the manipulation of thestuffing-box k, and the piston-rod O is carried through this barrel, andthrough the hollow in its plunger, to the large plunger d, where theconnection is made. This plan, it will be perceived, necessitates astuffing-box where the piston-rod G enters the barrel g, as stated, andthe connection of the engine with the pump is on the inside, while inmine no additional stuffing-box is required, and the connection is onthe outside and as convenient as can be desired.

\Vhat I claim as my invention, and desire to secure by Letters Patent,is-

The combination, substantially as shown, of the piston-rod 0, having anoutside connection with the pump, with the upper plunger, 6, and itsbarrel 9 placed out of the direct line between the steam piston andlower plunger, and by the side of said piston rod, substantially as andfor the purpose described.

CHARLES P. DEANE.

Witnesses:

GEORGE H. DEANE, M. O. DEANE.

